Water-back for furnace.



T. THORNBURG.

WATER BAGK FOR FURNACES.

APPLICATION FILED JAN. 25, 1909.

929,899, Patented Aug. 3, 1909.

2 SHEETSSHEET 1.

v armor 1 :01

PATENT OFFICE.

STATES.

.rnoms THORXBL'RG, or .nnnioxn, INDIANA.

warns-nae; FOB masons.

Sp rectification of amrdent.

9atehted Aug. 3, 1909.

Application filed January 25, 1009. sextant. 4751311 To u1l whmnit may concern: I a

'Be it known thatII. TEQBL'IS Tnonxntno, alcitizen of the United States. residing at Hammond, in the county of Lake and State '5 of -Indiana, have invented certain new and useful'lmprovements in li'ater-Backs for Furnaces, of whichthe' following is. a spec1-- panying drawings.

This invention is an improved water'back forfurnaces' of all kinds'f'and particularly those used for melting glass, roasting ores "andthelike.-

fication. reference being bad to theacconr T he object of the invention is to provide '1 a simple. ractical and etficien'twater back 'whiclrw' .efi'ectively protect thelining of a furnaceand thereby lengthen the'life of the samqjjehich will 'allo'Wfor the expansion and-eontraction of the furnace walls under changes of temperature andwhich "may beuickl'y and effectively cleaned out. fll'ith t e above and other objects in view,

the invention consists of the novel featuresofconstruction and the combination and arrangementjof parts hereinafter fully de- -,scribed andfclaimed. and illustrated inthe accompanying drawings. in which Figure lis a vertical cross sectional view 3 through a glass furnace showing the imgreyed water back applied thereto: Fig. 2

p a side-elevation of the furnace: Fig. 3 is a horizontal section; Fig. i is an enlarged cross sectional view through one of the membcrs'or sections of the water back; and

" '5 Fig. 5 is 'a detail sectional-view tl 1roug li tlie swinging. expansion and contractionjo nts offthejpipe connections uniting the several water-back sections.

While the'invention map be embodietl in a' furnace of any description and in any part of such furnace, 1t is ll'lustrated in the" (lrawi11gs as mounted'in the side wallsl-of .a-well' known type of glass furnace 2.

. The invention is duplicated on the two & sides ofthe furnace-and hence'a description of the structure on'one side will suiiice f or both; v

The invention wateriback members or sections ,3

metahas shown more clearly in Fig. 1, and is of substantiallyjrectangular shape in cross section, its inner wall'-l, however, being in- 'clin'e'd upwardlv and outwardly-so that-the fire bricks --or other lining 5 of the furnace walljl will lie against andbe supported by The several water back COIHIIlllDiCllfibHWith eacl1 other through conby a suitable joint 9. Said pipe sections 4,

consists of two or more, p I each -of" 550 which s preferablyconstructed I ofsheet nectin'g pipe sections 7, 8 and to allow for the movement of the water back sections with respect to each other during the expansion and contraction of the wall under variations in temperature. the pipe sections 7,.8 a1 e made.an ular and screwed into the ,adjacent water ack sections and united 8 are disposed in. angular relation, their adjacent'ends carrying the pivoted mem bers 10 of the joint 9 .and their opposite ends being connected to and in communication with adjacent water back sections, as shown -Water is introduced into thesev'eral water 'back' sections 3 through a supply pipe 12 .y sections 3 are 111 connected to one of said sections and each of the latter is provided 'with'a vent or overflow pipe 13 wl1i ch may contain a globe valve 14. a safety valve or any other suitable valve. These valves allow the air and steam,

accumulating in the water back sections to escape.

For the pur ose'of removing sediment,

scale'and dirtrom the water back sections,

each of them is provided with a cleanin meanslcons'istlng-of an air blast pipe 1:; an

' a'drain pipe 16. The pipe 15 extends 'longitudinally through the water back section.

adjacent toits bottom .andis formed with one or more rows of perforations 17 to permit of the escapeof'air blasts which will j thorou hlv agitate the sediment and dirt up n t e bottom of the section. A suitable controllin valve 18' isarranged in'the outer 'portiono the air blastpipe 15. The drain or, waste pipe l'fi is-tm-communication with,"

.105 and is also provided with'asuitabl'e cutofi the lower portion of the water backsections' or controlling -va'lve lt). v

20 denotes handholes forme inthe outer wall 'ofeach of the water-back sections ad'acent-totheir lower corners and closed. y suitable removable'fcovers' 21l- \Vhenthe latter are removedt-he collecteddirt-whi'ch cannot be removed through the drain ipe "1K5", ma; i lie'fli t-aken iout of" the Water Sack -"'"sections. t

Having thus described the invention what is claimed is:- i I 1. The combination of a furnace Wall of masonry, a lining for said wall, a plurality of water back sections set in said wall in spaced relationjand bonds of masonry be- 10 tween the water back sections to unite the portions of the wall and its lining and retain the latter against: the water back sections.

' s'p'a'c d A 'Qbfonjd'sof masonry between "thejfwiater, back .ions. to unite. the difso the wall [and its lining 1 a I a W latter against the water back 26 sections, and pip connections between the ,adiacent vv t rfbaclifsections having swing fi ndi'p m r ater] back-,5 ens ,to 'move toward and H tro mjeac h otliei in'the contraction and ex- 1,:25Qpa1isionofthefurnace wall. x

" v 3The combination of a furnace Wall, na'ter back 5 arranged tl1erein, pip'e 2' The coxnlainajzi not a'furnace wall of j masonry, aihn ng fOI SHICl wall, a plurality 5 9f wate'nback e'ct onsset in said wallnn i'pe sections to permit the' si nature in the presence 0 connections between adjacent water back sections, each of SQIdL PlpQLCOHI IQCtIOHS consisting of twovangulanpip'es, each having one of its ends threaded ortapped into one of the water back sections and a jointuniting the other ends of. said pipes and composed of pivoted members.

it he combination of a furnace Wall, a water back arranged therein; a "valve controlled drain pipe in communication with the water back adjacent its bottom and a valve controlled p erforated airbiast pipe extending through the ii at'ei back-adjacent to its bottom for discharging ai ibiast's into the-water back to agitfiite the' sediment and d irt therein.

5. The combination of a "furn e; 'wall, a water'back ari'anged therein n d having an outlet and means arranged within the water back adjacent its bott'onif for the sediment and dirt therein In testimony w iereot her unto my to n itnesses. BNBURG.

THosi Witnesses;

J. G." IBACH," p JESSIE Tnoaxnnn' 

